from sys import argv
from os.path import exists

script, from_file, to_file = argv

print(f"Copying from {from_file} to {to_file}")

#
in_file = open(from_file)
indata = in_file.read()

print(f"The input file is {len(indata)} byte long")

print(f"output file exist? {exists(to_file)}")
print("Ready, hit RETURN to continue, CTRL-C to abort")
input()

out_file = open(to_file,'w')
out_file.write(indata)

print("Done")

out_file.close()
in_file.close()